Phonetics Sensaphone SCADA 3000, Руководство пользователя

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SCADA 3000 User’s Manual
Figure 14: Timer Delay
example #4
The following program uses a Count-Up and a Count-Down instruction to keep track of the
number of acceptable widgets produced. As a widget comes down the production line, an opti-
cal sensor on input 6 senses the widget and makes the XIC instruction true, which increments
Counter 5. When widgets are rejected, they are diverted down another conveyor with an opti-
cal sensor on input 10. When the reject sensor sees a widget, it decrements Counter 5. With
this configuration the counter is able to keep track of the acceptable widgets produced. A reset
button on input 12 resets the counter to 0.
Figure 15: Count-Up/Count-Down instruction